5855-01-039-2850 CELL ASSEMBLY,OPTICAL INSTRUMENT Index 5855-01-039-2852 HOLDING FIXTURE,OB

National Stock Number:
5855-01-039-2851

Federal Supply Class:
5855

National Item Identification Number:
010392851

Description:
RETAINER,OPTICAL ELEMENT

Detail:
A cylindrical, externally threaded item having a centrally located hole specifically designed to retain by means of either a raised box (shoulder), or counterbore, countersink, or a similar shaped recess, an optical element such as a lens, reticle, cell, and the like, in optical assemblies. It must have drilled holes or slots to facilitate assembly and disassembly. For items which house the optical element(s), and form the internal or central portions of an optical system, see CELL, OPTICAL ELEMENT. Excludes RING, EXTERNALLY THREADED.


Manufacturer Information:
SM-D-85032304YE2VALCORE MANUFACTURING LLC
SM-D-85032320723VALCORE MANUFACTURING LLC
SM-D-85032380063US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR


Techincal Specification:
STYLE DESIGNATORSHOULDERED
SHOULDER LENGTH0.365 INCHES MINIMUM AND
0.375 INCHES MAXIMUM
TAPERED HOLE MINOR DIAMETER3.120 INCHES MINIMUM AND
3.130 INCHES MAXIMUM
TAPER ANGLE IN DEG7.0
OVERALL LENGTH0.734 INCHES MINIMUM AND
0.744 INCHES MAXIMUM
FLANGE DIAMETER3.495 INCHES MINIMUM AND
3.505 INCHES MAXIMUM
SHOULDER THREAD SIZE3.380 IN.-32
MATERIALALUMINUM ALLOY 6061
DRIVE TYPEDRILLED HOLE
HOLE OR SLOT QUANTITY3
DIAMETER0.120 INCHES MINIMUM AND
0.130 INCHES MAXIMUM
DRIVE FACILITY ANGULAR SPACING IN DEG120.0
RADIUS FROM GEOMETRIC AXIS TO HOLE CENTER1.585 INCHES NOMINAL
INTERNAL ANNULAR SERRATIONNOT PROVIDED
GUIDE DESIGNTHREAD RELIEF
SETSCREW NOTCHNOT PROVIDED
FSC APPLICATION DATANIGHT VISION EQUIPMENT


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